Upfront Style Choices Overlaying - Cant choose style

When you update the styles to be bigger and/or heavier-weight, they tend to change the visual representation of the styles when in a text box selecting the text to change.
This causes an overlay of the bigger styles which means you cant select the smaller ones which are being covered by the other ones.
Any way to fix this so that the text-style editor menu box-size is dynamic or something?
As i cant select the styles i want to use!
Thanks,
Sam